It will ask you for the source image, destination file, the ComputerCraft image size (a full 8x6 monitor is 82x40) and whether to stretch or fit. Use pastebin to get the destination file in your computers and paintutils to draw it:

Type "pastebin get shjRbR5J setup", then run setup, then type "display ftb_logo" or "display star". The images were made for a bank of 8x6 advanced monitors. I reused the wrap code from the reddit post. Now people can put their images on pastebin, and people can use this little program to display them. The program isn't quite perfect, as it isn't clearing the background color, but I think that's mostly becuase I used png files for my source data.

Tjakka5, on 15 May 2013 - 01:50 PM, said:

Soo...
I can get a MLP picture in my minecraft?
You sir, have made my day...

If the background isn't getting cleared, your images have non-zero alpha as transparent

Yup. In the CC files for the images, all the transparent pixels in the originating image where converted into whitespace. Not a big deal. I just added a couple lines of code to the script to set the background color to black, and clear the screen.